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Alignment-based extraction of multiword expressions

Helena de Medeiros Caseli, Carlos Ramisch, Maria das Graças Volpe Nunes and Aline Villavicencio
Language Resources and Evaluation
Vol. 44, No. 1/2, Special Issue : Multiword Expressions: Hard Going or Plain Sailing (Winter/Spring 2010), pp. 59-77
Published by: Springer
Stable URL: http://www.jstor.org/stable/40666349
Page Count: 19
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Alignment-based extraction of multiword expressions
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Abstract

Due to idiosyncrasies in their syntax, semantics or frequency, Multiword Expressions (MWEs) have received special attention from the NLP community, as the methods and techniques developed for the treatment of simplex words are not necessarily suitable for them. This is certainly the case for the automatic acquisition of MWEs from corpora. A lot of effort has been directed to the task of automatically identifying them, with considerable success. In this paper, we propose an approach for the identification of MWEs in a multilingual context, as a by-product of a word alignment process, that not only deals with the identification of possible MWE candidates, but also associates some multiword expressions with semantics. The results obtained indicate the feasibility and low costs in terms of tools and resources demanded by this approach, which could, for example, facilitate and speed up lexicographic work.

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